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Overclock 6870 past 1000Mhz....how? - Page 2

post #11 of 40
PowerStrip Perhaps?
Old school but should work.
    
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post #12 of 40
Quote:
Originally Posted by crunchie View Post
Which mods?
I'll have a quick look, I have saved it here somewhere.

not to worry, for some reason I had the idea you where using crossfire.

Ok have you put on in the settings in Afterburner Unlock Voltage control and Unlock Voltage Monitoring ?

If so you are ready to go and overclock. I have also found that the only version of Afterburner that didn't give me trouble is version 1.4.2. I don't know about the new ones but this worked for me.
Edited by smash_mouth01 - 2/5/11 at 5:24am
post #13 of 40
Thread Starter 
Am using crossfire .
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post #14 of 40
Cool ok I have the fix and I tested it last night, it works but it can confuse you so, here goes.

First you will need to do this:



The key you are looking for is {4D36E968-E325-11CE-BFC1-08002BE10318}

The next step it to turn off EnableUlps,change the values for both cards from 1 to 0 like this and then reset your machine.

do this in the sub folder called 0000 for card 1 and 0001 for card 2



Now what this will do is stop the energy saving features of the LINKED card, this is what is causing the crashes.
Now once you come back into windows you will hear both cards fans running at their modified speed.
Now open Trixx, go to settings and check to see if sync of both cards is checked
like this, this next bit is real important "do not change this setting".



Now you are good to go, but there is three more things to remember.

1) This program will send the Overdrive screen on CCC stupid.

2) This will make your second card ramp up to 99% load, give it a blast of Furmark and once you close Furmark the second GPU will ramp back down to 0% load.



3) Once you have set your setting in Trixx, double check it in CCC for fan usage and set it back to manual setting at what ever speed setting you need to keep them cool.

Other than that your good to go. But just remember these things and you should be set.
I'll keep playing about with it and if I find anything else out I will post it here.

Also this is the fix for Afterburner, but with all due respect Afterburner is a better program.
Edited by smash_mouth01 - 2/5/11 at 3:26pm
post #15 of 40
Thread Starter 
Will this cause the 2nd card to run @ 99% all the time, or just initially after making those reg changes?
Both cards are on water too, so fan noise isn't an issue. Don't fancy having 1 card running flat out all the time though.
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post #16 of 40
Thread Starter 
My reg looks different to that.

Attachment 194190
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post #17 of 40
The second card will run at full stick until you run a 3d app then it will ramp down.

Yes my registry looked different but the keys are the same.

this is the one you want and do the same for 0001,0002,0003 it will be the same. Change all the EnableUlps to 0, then reset.

post #18 of 40
Thread Starter 
Thanks. Off to try it now .
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post #19 of 40
Quote:
Originally Posted by crunchie View Post
I am very wary of doing that. I would have no idea what to do if it went wrong.
I thought the 6870's have that dual bios with the switch on the card so if your bork the vBIOS you just hit the switch and flash it back to normal.
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post #20 of 40
Na that's only the 6900 series.
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